From dd429e9597993e3b2cb78b4ccce543884794a32a Mon Sep 17 00:00:00 2001
From: Pavel Krymets <pavel@krymets.com>
Date: Thu, 9 Aug 2018 09:45:28 -0700
Subject: [PATCH] Catch exceptions thrown by is_regular_file (#1179)

---
 .../CommonLib/PollingAppOfflineApplication.cpp   | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/AspNetCoreModuleV2/CommonLib/PollingAppOfflineApplication.cpp b/src/AspNetCoreModuleV2/CommonLib/PollingAppOfflineApplication.cpp
index e9bbb42383..14629ebe10 100644
--- a/src/AspNetCoreModuleV2/CommonLib/PollingAppOfflineApplication.cpp
+++ b/src/AspNetCoreModuleV2/CommonLib/PollingAppOfflineApplication.cpp
@@ -27,12 +27,20 @@ PollingAppOfflineApplication::CheckAppOffline()
         SRWExclusiveLock lock(m_statusLock);
         if (ulCurrentTime - m_ulLastCheckTime > c_appOfflineRefreshIntervalMS)
         {
-            m_fAppOfflineFound = is_regular_file(m_appOfflineLocation);
-            if(m_fAppOfflineFound)
+            try
             {
-                LOG_IF_FAILED(OnAppOfflineFound());
+                m_fAppOfflineFound = is_regular_file(m_appOfflineLocation);
+                if(m_fAppOfflineFound)
+                {
+                    LOG_IF_FAILED(OnAppOfflineFound());
+                }
+                m_ulLastCheckTime = ulCurrentTime;
+            }
+            catch (...)
+            {
+                // is_regular_file might throw in very rare cases
+                OBSERVE_CAUGHT_EXCEPTION();
             }
-            m_ulLastCheckTime = ulCurrentTime;
         }
     }